Israel-Gaza-Lebanon updates: US helps shoot down missiles in Iranian barrage

Israel Defense Forces spokesman Daniel Hagari issued remarks Tuesday evening, announcing that missiles had been launched from Iran toward Israel.

He said messages have been sent to cellphones, warning Israeli citizens in certain areas to enter "protected space" and to seek shelter if they hear sirens.

Hagari added that if citizens hear explosions, they may be the result of interceptions or impacts.

"We are strong and can handle this event as well," Hagari said. "The IDF is doing and will continue to do everything necessary to protect the civilians of Israel. The IDF is fully prepared for both defense and offense at peak readiness."

-ABC News' Jordana Miller

Several flights near Iran are diverting ahead of expected missile launches at targets in Israel.

Several Lufthansa flights and one Swiss Air flight were diverted back to Frankfurt, Germany, and Turkey as they approached Iranian air space.

-ABC News' Sam Sweeney

Israel said missiles have been launched from Iran toward Israel.

Sirens are sounding across the country.

Iran is expected to launch 240 to 250 missiles in two waves at four targets in Israel, including Mossad headquarters and three air bases, according to an Israeli source and a senior U.S. administration official.

Israel is not expected to launch a preemptive strike, according to the U.S. administration official. It should take the missiles less than 15 minutes to reach targets once launched.

The U.S. and Israel have all defenses activated, and Israel will “absolutely “ retaliate after it happens," the official said.

The total number of ballistic missiles is about double the number launched by Iran in April -- 99% of which were intercepted.

-ABC News' Martha Raddatz